The Bearing,ball,annular, cataloged under National Stock Number 3110-01-008-1173, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is S/n Precision Enterprises, Inc. Dba Pacamor /kubar Bearings. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-008-1173 |
| Primary Part Number | 7903309-3 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | S/n Precision Enterprises, Inc. Dba Pacamor /kubar Bearings |
| Status | ACTIVE |
| Retainer Fabrication Method | STAMPED |
| Lubrication Material | GREASE |
| Outer Ring Width | 0.1562 INCHES NOMINAL IN |
| Internal Clearance | 0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN |
| Surface Finish | GROUND |
| Shield Quantity | 2 |
| Style Designator | NON-LOADING GROOVE, NON-SEPARABLE |
| Overall Outside Diameter | 0.5000 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Test Data Document | 81349-MIL-E-5400 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). AND 81349-MIL-STD810 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.). |
| Standard Tolerance Designation | ABEC NO.3 |
| Bore Diameter | 0.3125 INCHES NOMINAL IN |
| Material | STEEL COMP 440C INNER RING |
| Material | STEEL COMP 440C OUTER RING |
| Material | STEEL CORROSION RESISTING RETAINER |
| Material | STEEL COMP 440C BALL |
| Material | COPPER ALLOY SHIELD |
| Lubrication Material Document and Classification | G300,FSCM 24446 MFR REF SINGLE MATERIAL RESPONSE |
| Inner Ring Width | 0.1875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7903309-3 PRIMARY | S/n Precision Enterprises, Inc. Dba Pacamor /kubar Bearings (USA) |
| 7903309-3 PRIMARY | Mpb Corp Div Timken Super Precision (USA) |
| Reference | Meaning |
|---|---|
| SR1810PPEEK25 | 5/1 Secondary reference U.S. Government activity |
| 7903309-3 | 3/2 Design control — primary reference U.S. Government activity |
| 7903309-3 | 1/2 Source control — Government-approved source U.S. Government activity |
| S8516RHHEP25 | 5/1 Secondary reference Mpb Corp Div Timken Super Precision |
NSN 3110-01-008-1173 is a Bearing,ball,annular, manufactured by S/n Precision Enterprises, Inc. Dba Pacamor /kubar Bearings, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-008-1173 has 2 manufacturer part numbers on file: 7903309-3 (S/n Precision Enterprises, Inc. Dba Pacamor /kubar Bearings), 7903309-3 (Mpb Corp Div Timken Super Precision).
Key specifications for 7903309-3: Retainer Fabrication Method: STAMPED; Lubrication Material: GREASE; Outer Ring Width: 0.1562 INCHES NOMINAL IN; Internal Clearance: 0.0002 INCHES MINIMUM RADIAL AND 0.0005 INCHES MAXIMUM RADIAL IN. 20 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.